cerc-io/ipld-eth-server
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support custom chain config (#36)

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* support custom chain config

* move loading config logic to a separate helper function
This commit is contained in:
Ramil Amerzyanov 2021-03-10 19:18:32 +03:00 committed by GitHub
parent 33bb152c04
commit d3f30b621b
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 36 additions and 1 deletions
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2
cmd/serve.go
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@ -137,6 +137,7 @@ func init() {
serveCmd.PersistentFlags().String("eth-chain-id", "1", "eth chain id")
serveCmd.PersistentFlags().String("eth-default-sender", "", "default sender address")
serveCmd.PersistentFlags().String("eth-rpc-gas-cap", "", "rpc gas cap (for eth_Call execution)")
serveCmd.PersistentFlags().String("eth-chain-config", "", "json chain config file location")
// and their bindings
viper.BindPFlag("server.graphql", serveCmd.PersistentFlags().Lookup("server-graphql"))
@ -153,4 +154,5 @@ func init() {
viper.BindPFlag("ethereum.chainID", serveCmd.PersistentFlags().Lookup("eth-chain-id"))
viper.BindPFlag("ethereum.defaultSender", serveCmd.PersistentFlags().Lookup("eth-default-sender"))
viper.BindPFlag("ethereum.rpcGasCap", serveCmd.PersistentFlags().Lookup("eth-rpc-gas-cap"))
viper.BindPFlag("ethereum.chainConfig", serveCmd.PersistentFlags().Lookup("eth-chain-config"))
}

26
pkg/eth/helpers.go
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@ -17,7 +17,11 @@
package eth
import (
"encoding/json"
"fmt"
"github.com/ethereum/go-ethereum/cmd/utils"
log "github.com/sirupsen/logrus"
"os"
sdtypes "github.com/ethereum/go-ethereum/statediff/types"
@ -39,6 +43,28 @@ func ResolveToNodeType(nodeType int) sdtypes.NodeType {
}
}
// LoadConfig loads chain config from json file
func LoadConfig(chainConfigPath string) (*params.ChainConfig, error) {
file, err := os.Open(chainConfigPath)
if err != nil {
utils.Fatalf("Failed to read chain config file: %v", err)
return nil, err
}
defer file.Close()
chainConfig := new(params.ChainConfig)
if err := json.NewDecoder(file).Decode(chainConfig); err != nil {
utils.Fatalf("invalid chain config file: %v", err)
return nil, err
}
log.Infof("Using chain config from %s file. Content %+v", chainConfigPath, chainConfig)
return chainConfig, nil
}
// ChainConfig returns the appropriate ethereum chain config for the provided chain id
func ChainConfig(chainID uint64) (*params.ChainConfig, error) {
switch chainID {

9
pkg/serve/config.go
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@ -48,6 +48,7 @@ const (
ETH_DEFAULT_SENDER_ADDR = "ETH_DEFAULT_SENDER_ADDR"
ETH_RPC_GAS_CAP = "ETH_RPC_GAS_CAP"
ETH_CHAIN_CONFIG = "ETH_CHAIN_CONFIG"
ETH_SUPPORTS_STATEDIFF = "ETH_SUPPORTS_STATEDIFF"
)
@ -76,6 +77,7 @@ func NewConfig() (*Config, error) {
viper.BindEnv("ethereum.httpPath", shared.ETH_HTTP_PATH)
viper.BindEnv("ethereum.defaultSender", ETH_DEFAULT_SENDER_ADDR)
viper.BindEnv("ethereum.rpcGasCap", ETH_RPC_GAS_CAP)
viper.BindEnv("ethereum.chainConfig", ETH_CHAIN_CONFIG)
viper.BindEnv("ethereum.supportsStateDiff", ETH_SUPPORTS_STATEDIFF)
c.DBConfig.Init()
@ -123,7 +125,12 @@ func NewConfig() (*Config, error) {
c.RPCGasCap = rpcGasCap
}
}
c.ChainConfig, err = eth.ChainConfig(nodeInfo.ChainID)
chainConfigPath := viper.GetString("ethereum.chainConfig")
if chainConfigPath != "" {
c.ChainConfig, err = eth.LoadConfig(chainConfigPath)
} else {
c.ChainConfig, err = eth.ChainConfig(nodeInfo.ChainID)
}
return c, err
}